Zbigniew Handzel

A simulation approach to statistical evaluation of periodic task scheduling in a real-time computer system

The task schedulability theorem in the celebrated GRMS theory provides a sufficient condition only, specifying the upper bound on CPU utilization by scheduled periodic tasks. This paper presents a simulation study on real-time task scheduling for a specific case when the upper bound on processor utilization can be exceeded. The results are applied in a problem of multiprocessor task scheduling.

Cloud computing - czyli chmura obliczeniowa i możliwości jej wykorzystania w mediach

Cloud computing, is a solution that can be called the future of IT (Information Technology). Extremely fast developing technologies mean that an increasing number of users simply cannot keep up with the implementation of new technologies, and in addition the cost of frequent updates to these systems are really significant. With cloud computing, we can take advantage of the latest solutions and the largest computing power without the need to purchase, servicing and frequent updating of hardware and software. This is very important from an economic point of view of the users, since in the case of traditional IT systems, each update of software and hardware required considerable financial investments. An important aspect is the scalability of cloud computing, where the system ‘grows’ with the development and capabilities of the company, without generating unnecessary expenditure. It could then be said that this is almost the perfect solution for companies and enterprises, where activities are based on innovative solutions, which include, among others, media. Cloud computing will allow, in this case, for the implementation of the latest IT technology, minimizing the costs associated with the process.